125680069 has 8 divisors (see below), whose sum is σ = 128877912. Its totient is φ = 122519040.

The previous prime is 125680063. The next prime is 125680091. The reversal of 125680069 is 960086521.

It can be written as a sum of positive squares in 4 ways, for example, as 3467044 + 122213025 = 1862^2 + 11055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125680069 - 2⁷ = 125679941 is a prime.

It is a super-2 number, since 2×125680069² = 31590959487689522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125680063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224 + ... + 16009.

It is an arithmetic number, because the mean of its divisors is an integer number (16109739).

Almost surely, 2^125680069 is an apocalyptic number.

It is an amenable number.

125680069 is a deficient number, since it is larger than the sum of its proper divisors (3197843).

125680069 is a wasteful number, since it uses less digits than its factorization.

125680069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18407.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 125680069 is about 11210.7122432074. The cubic root of 125680069 is about 500.9051191965.

The spelling of 125680069 in words is "one hundred twenty-five million, six hundred eighty thousand, sixty-nine".